AP EAMCET · PHYSICS · Mechanical Properties of Fluids
A liquid does not wet the solid surface if the angle of contact is
- A zero
- B equal to \(45^{\circ}\)
- C equal to \(90^{\circ}\)
- D greater than \(90^{\circ}\)
Answer & Solution
Correct Answer
(D) greater than \(90^{\circ}\)
Step-by-step Solution
Detailed explanation
A liquid does not wet the solid surface if the angle of contact is obtuse ie, greater than \(90^{\circ}\). In this case cohesive forces will be greater than adhesive forces and so, the liquid does not wet the surface of solid.
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